Physics Problems With Solutions Mechanics For Olympiads And Contests -

Given: Mass (m) = 2 kg, force (F) = 10 N, angle (θ) = 30°.

A block of mass 2 kg is placed on a horizontal surface. A force of 10 N is applied to the block at an angle of 30° above the horizontal. Find the acceleration of the block. Given: Mass (m) = 2 kg, force (F) = 10 N, angle (θ) = 30°

a = F cos 30° / m = 10 * (√3/2) / 2 = 4.33 m/s² Given: Mass (m) = 2 kg

Potential energy (PE) = mgh = 0.5(10)(10) = 50 J force (F) = 10 N

Kinetic energy (KE) = (⁄ 2 )mv² = (⁄ 2 )(0.5)(14.14)² = 50 J

Using the equation: v² = v₀² - 2gh, we get: v² = 20² - 2(10)(10) = 400 - 200 = 200 v = √200 = 14.14 m/s